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Search found 23708 results on 949 pages for 'javascript'.

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• How can I prevent a double submit with jQuery or Javascript?

  - by kielie

  Hi guys, I keep getting duplicate entries in my database because of impatient users clicking the submit button multiple times. I googled and googled and found a few scripts, but none of them seem to be sufficient. How can I prevent these duplicate entries from occurring using javascript or preferably jQuery? Thanx in advance!

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• Update a field from server without reloading the existing page using simple javascript.

  - by Rahul2047

  I want to change a value of a field say document.getElementById('reloader').innerHTML = updated value from Server I do not want to use Ajax, PHP, ASP, JSP .. or anything like these. Is it possible by using simple javascript? Server is C# 's application made by using HttpListener. Please question if needed more info.

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• How can a Javascript object refer to values in itself?

  - by Erin Drummond

  Hi, Lets say I have the following javascript: var obj = { key1 : "it ", key2 : key1 + " works!" }; alert(obj.key2); This errors with "key1 is not defined". I have tried this.key1 this[key1] obj.key1 obj[key1] this["key1"] obj["key1"] and they never seem to be defined. How can I get key2 to refer to key1's value?

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• Switch statements: do you need the last break? (Javascript mainly)

  - by Jon Raasch

  When using a switch() statement, you add break; in between separate case: declarations. But what about the last one? Normally I just leave it off, but I'm wondering if this has some performance implication I'm not thinking about? I've been wondering about this for a while and don't see it asked elsewhere on Stack-O, but sorry if I missed it. I'm mainly asking this question regarding Javascript, although I'm guessing the answer will apply to all switch() statements.

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• How can I create an editable combo box in HTML/Javascript?

  - by Christian Davén

  I need to let users select an item from a dropdown list, but also allow them to instead enter any text, even if it doesn't match an item in the list. How can I achieve this on a web page with HTML and Javascript? The select field doesn't let users enter text, and the input text field doesn't show the preferred alternatives. All items must show if the user opens the dropdown, so it can't be a simple auto-complete that only shows matching items.

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• How can I catch all ajax requests in javascript ?

  - by Annan

  Is it possible to have a global event handler for ajax requests that automatically gets called when any ajax request returns ? I'm interested in this because I'm making a greasemonkey script for an ajax site. In previous scripts I either ran the main function every few seconds or overwrote parts of the site's javascript, both things that are messy.

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• how to increase Speed of a component made from Javascript or JQuery ?

  - by Dhaval dave

  I want to make my component faster, I am using Javascript and JQuery to build that. I am using JSON object to communicate with component and back-end is python. Is there any suggestion to make component faster?

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• How can I add a simple counter function in javascript jquery?

  - by Adam

  I'm using Shadowbox a jquery overlay and I wanted to count how many people are actually using the overlay. Thus, I would need a function that would write a counter to a file or sending a query through a php api... has to be a a php url api because I cant use php on the server where the overlay is. So I need help with executing a javascript function on the overlay click, tips on how to make a counter query through GET method. Thanks

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• Does jQuery or JavaScript have the concept of classes and objects?

  - by Prashant

  I found the following code somewhere, but I am not understanding the code properly. ArticleVote.submitVote('no');return false; Is ArticleVote a class and submitVote() a function of that class? Or what does the above code mean? And is there any concept of classes and objects in jQuery or in traditional JavaScript? How to create them? Please share some reference links or code.

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• How can ZK Javascript can be followed to find actual file?

  - by Osman DERTLI

  Hello, I want to follow ZK javascript code to obtain XML results. In the website when a country selected, another selectbox for states is populated by using ZK and i tried to find the actual address such as http://cc.com/getState?countryID=46 but I've lost within the ZK. Is there a way to reach the actual URL? Thanks.

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• How do I distinguish between Windows 2008 and Windows Vista using javascript?

  - by David Reis

  I need to detect the SO of the user in a web application (IE only). I am using the function BrowserDetect.OS from javascript, but it returns the same String ("Windows Vista") when called from Windows 2008 and Windows Vista, and I cannot distinguish the user SO. Is there a way to detect this difference? http://msdn.microsoft.com/en-us/library/ms537503%28VS.85%29.aspx

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• How can I make a JavaScript alert before a page closes?

  - by Nuha

  I want to write JavaScript code that would, when I close the current HTML page, display an alert message like "Are you sure?" I want to take the value of the button from the alert message, whatever the user pressed. How can I do this?

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• Is it possible to create ASP.NET pages without the autogenerate javascript?

  - by Andy Evans

  As a test, I wanted to have an ASP.NET page rendered without the auto-generated javascript. Is this possible?

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• Can I get an arithmetic expression as a string computed with the Javascript Math object?

  - by chimerical

  If I have an arithmetic expression as a string ("2+3*4/5"), is there a way to get this computed with the Javascript Math object without parsing that entire string to separate everything out?

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• Can I use javascript regular expression in php as it is.

  - by Shantanu Gupta

  I am using a regular expression in javascript and want to do server side validation as well with the same regular expression. Do i need to modify it to make it compatible or will it run as it is. How to use PHP regular expresion. Please provide a small example. Thanks in Advance

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• Calender Class in Javascript - unable to keep the reference.

  - by basit74

  Hello, I wrote a datepicker in Javascript, but it is not working properly, as I lose the reference to the Calender object. here is the example http://asexpress.de/calender/ by clicking within the input field the calender will be displayed. What should I do that the reference to the Calender object remains in contact.

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• How to give sentence case to sentences through CSS or javascript?

  - by jitendra

  How to give sentence case to sentences through CSS or javascript? I've tried these CSS properties but these are different capitalize Transforms the first character of each word to uppercase uppercase Transforms all characters to uppercase lowercase Transforms all characters to lowercase Edit: 19 FEB 2010 is there any option in jquery to achieve this?

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• Some encoded Javascript that I need in plain text. Halp!

  - by Alex

  Hey, I'm having some issues trying to decode some javascript.. I have no idea what kind of encoding this is.. i tried base 64 decoders etc. If you can please help me out with this, here's a fragment of the code: \x69\x6E\x6E\x65\x72\x48\x54\x4D\x4C","\x61\x70\x70\x34\x39\x34\x39\x3 Any ways I can get plain text from that? Thanks!

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• how many javascript setTimeout/ setInterval call can be set simultaneously in one page?

  - by rabbit

  I have to use atleast 2 setTimeouts and 1 setInterval. Does this have any dependency on the browser or javascript engine being used?

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• Does Facebook Connect have a javascript API that doesn't open a new window?

  - by alex

  I want it to have a popup dialog javascript box. Instead of a new window. I've seen it before. How can I get it? Thanks.

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• Does .net/C# have an equvilent Javascript Object Proxy/Serialization like DWR in Java?

  - by leeand00

  I have some old code in Javascript that interfaces to Java DWR. I'm looking to port the back-end to .NET/C# possibly, and I was just wondering if there was an equivalent AJAX framework that would work in the same manner as the DWR framework in Java.

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• How do I protect my website from javascript injection attacks when using rich text editors?

  - by VJ

  Hi all I am using the markitup editor to get the value for one of my fields and storing it a sql server 2008 db. Now I guess the problem is people having script tags and javascript in the editor and injecting malicious scripts and I have my validate input turned false. So can anyone suggest me a way to write a custom validation method that maybe checks for script tags and removes them...or just guide me through the steps i need to do ?...also are there other things also that I should be worried about..?

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• disabling dropdownlist inside a gridview based on value selected on another dropdownlist inside the gridview from javascript or jquery

  - by Joy

  what i m trying is i hav two dropdownlists inside the gridview... namely say ddonsiteoffsite and ddhours... now what i want is if the selectedtext of ddonsiteoffsite is "onsite" the ddhours should b disabled... i tried the code snippet but ... its not disabling the ddhours... can someone help me please.. <asp:TemplateColumn HeaderText=" OnSite/OffSite" > <ItemTemplate> <asp:DropDownList ID="ddOnsiteOffside" runat="server" onchange="ToggleOnOff(this)"><asp:ListItem Text = "Offsite" Value="Offsite"></asp:ListItem> <asp:ListItem Text = "Onsite" Value="Onsite"></asp:ListItem> </asp:DropDownList> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn> <ItemTemplate> <asp:DropDownList ID="ddhours" runat="server"> <asp:ListItem Text = "1" Value="1" ></asp:ListItem> <asp:ListItem Text = "2" Value="2" ></asp:ListItem> <asp:ListItem Text = "3" Value="3" ></asp:ListItem> <asp:ListItem Text = "4" Value="4" ></asp:ListItem> <asp:ListItem Text = "5" Value="5" ></asp:ListItem> <asp:ListItem Text = "6" Value="6" ></asp:ListItem> <asp:ListItem Text = "7" Value="7" ></asp:ListItem> <asp:ListItem Text = "8" Value="8" ></asp:ListItem> <asp:ListItem Text = "9" Value="9" ></asp:ListItem> </asp:DropDownList> </ItemTemplate> </asp:TemplateColumn> and the corresponding javascript i am using is : enter code here function ToggleOnOff(ddonoff) { var row = chk.parentNode.parentNode; if(ddonoff.value=="Onsite") { row.getElementsByTagName("ddhours")[0].disabled = true; } else row.getElementsByTagName("ddhours")[0].disabled = false; } can someone help to achieve this ?? using javascript or jquery ? i m not understanding where i went wrong ...

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• How do I validate the size of a file using JavaScript?

  - by Radhi

  when upload button clicked on page... want to check filesize selected in fileupload control and stop postback of upload button if file size exceeds... what are the ways to do this using jquery/javascript?

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• Javascript - Is it possible to prototype window.onerror if the browser is webkit based?

  - by JK

  I know that webkit browsers do not support window.onerror. Would it be possible to create a prototype with the same arguments to mimic this if it is not present? eg if (!window.onerror) { // create a prototype to implement the missing function } I've only ever used javascript, I've never extended it, so I don't know what is required, and what constraints there are etc.

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